Massive capacities up to 4 TB suit even the most demanding datacenter or cloud storage needs.

Designed for heavy application workloads.

Designed to handle up to 550 TB per year in any heavy application datacenter with the highest workload capabilities of any WD 3.5 hard drive. Up to 6 Gb/s transfer rates and sustained sequential data rates of up to 182 MB/s, deliver performance and reliability to any datacenter environment.

Designed for quality and reliability.

With up to 1.4 million hour MTBF, this high performance drive delivers durability and the highest level of reliability for 24x7x365 operation in the most demanding storage environments.

Designed for quality and reliability.
Datacenter drives undergo at least 5 million hours of functional testing, and over 20 million hours of comprehensive Interoperability testing in an extensive array of server and storage systems. Please see the product AVL list for more info.

Dual portprocessor.
Twice the processing power to maximize performance.

Dual actuator technology.
A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy. (2 TB and above)

StableTrac.
The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations. (2 TB and above)

Vibration Protection.
Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. The result is a significant performance improvement in high vibration environments over the previous generation of drives.

* SED drives may require TCG-compliant host or controller support. SED drives may not be available in all countries.

The WD advantage.
WD puts our datacenter products through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures our products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems and drivers to ensure an even greater level of quality, reliability and peace of mind.

WD also has a detailed Knowledge Base with helpful articles and software utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.

Specifications

Product Specifications

Interface

SAS 6 Gb/s

Performance Specifications

Rotational Speed

7,200 RPM (nominal)

Buffer Size

32 MB

Load/unload Cycles

600,000 minimum

Transfer Rates

Transfer Rate (Buffer To Disk)

182 MB/s (Sustained)

Physical Specifications

Capacity

4 TB

User Sectors Per Drive

7,814,037,168

Physical Dimensions

English

Height

1.028 Inches

Depth

5.787 Inches

Width

4.00 Inches

Weight

1.66 Pounds

Metric

Height

26.1 mm

Depth

147 mm

Width

101.6 mm

Weight

0.75 kg

Environmental Specifications

Shock

Operating Shock (Read)

65G, 2 ms

Non-operating Shock

300G, 2 ms

Acoustics

Idle Mode

31 dBA (average)

Seek Mode 0

34 dBA (average)

Temperature (English)

Operating

41° F to 131° F

Non-operating

-40° F to 158° F

Temperature (Metric)

Operating

5° C to 55° C

Non-operating

-40° C to 70° C

Electrical Specifications

Current Requirements

Power Dissipation

Read/Write

11.50 Watts

Idle

9.20 Watts

Compatibility

Operating System

Compatibility

Windows/Mac

Compatibility

Windows 7/Vista/XP/2000, Windows server, Linux, and Mac OS.

*Free Standard Shipping offered on all orders. Offer not valid for addresses in Hawaii or Alaska. The WD Store reserves the right to change or discontinue this offer at any time.